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Re: "If" syntax question

  • To: mathgroup at smc.vnet.net
  • Subject: [mg105156] Re: "If" syntax question
  • From: "Sjoerd C. de Vries" <sjoerd.c.devries at gmail.com>
  • Date: Mon, 23 Nov 2009 06:49:19 -0500 (EST)
  • References: <6029eb910911210735s5be59d99wf16925fd4cdc7302@mail.gmail.com>

You should try SetDelayed (:=) instead of Set (=) in the function
definition. If you don't do that the If statement is evaluated at the
time of definition and not at the time of calling.

Cheers -- Sjoerd

On Nov 22, 1:11 pm, Michael Greene <mgre... at csumb.edu> wrote:
> Oops. I corrected the expression to use == instead of = in the cond=
itional.
> Still don't get what I'm trying for which is a single 3d point coordinate=


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